unity实现简单抽奖系统
这段时间工作比较空闲，想做个抽奖系统，发现网上的抽奖系统看不懂，然后自己做了一个可以随意定义奖品概率，不管什么时候停下来指针最终都会转到指定的奖品哪。
废话不多说，动手一步一步来。
这个抽奖系统就使用了两张图片，一个指针，一个圆形的图片。
然后做一个预制体，图片就是圆形图片，image type选择filled,fill amount控制这个图片的面积大小，同时也是该图片的概率，Text组件是该奖品的名称。
再接下来就做一下界面布局的工作
Bg就是那个灰色的图片，Rotate是个空物体，用来挂在脚本的（DialRotate.cs和Slot.cs），cloneParent也是个空物体，作为预制体的父物体，要注意的是cloneParent中心那个蓝色的圆圈要和Rotate的蓝色的圈的位置一致，界面布局工作完成。
接下来到代码了，Slot.cs脚本，一开始会实例化奖品，K键和L键可以随意修改奖品名称，概率（这里概率做了限制，需要使用的自己修改一下代码即可），空格键会随机抛出物品，并且开始旋转，鼠标右键是停止转动（想什么时候停下来都行，最后都会得到所抛出的物体）DialRotate.cs脚本用于处理旋转的。这两个脚本涉及到一些数学计算，慢慢理解即可。
以下是这个工程的脚本，需要的话直接复制黏贴即可使用
Slot.cs
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class Slot : MonoBehaviour {
private DialRotate dialRotate;
/// <summary>
/// 奖品数据
/// </summary>
private class GrifData
{
/// <summary>
/// 奖品的名称
/// </summary>
public string mText;
/// <summary>
/// 图片的Amount值
/// </summary>
public float point;
/// <summary>
/// 奖品停留在指针时父物体要旋转的角度
/// </summary>
public float angle;
/// <summary>
/// 该奖品对应UI面板上的名称
/// </summary>
public string mtran;
/// <summary>
/// 该奖品的ID
/// </summary>
public int gID;
}
/// <summary>
/// 奖品的描述信息
/// </summary>
private class GrifInfo
{
public Text mText;
public string msg;
}
private List<GrifInfo> mListSD = new List<GrifInfo>();
/// <summary>
/// 奖品的id和概率对应
/// </summary>
private Dictionary<int, float> mPoints = new Dictionary<int, float>();
/// <summary>
/// 用于储存奖品信息（顺序排列）（奖品的id，名称，所占的百分比）
/// </summary>
private List<GrifData> grigtData = new List<GrifData>();
/// <summary>
/// 这个也是用于储存奖品信息，不过是乱序排列（奖品的id，名称，所占的百分比）
/// </summary>
private List<GrifData> randomData = new List<GrifData>();
/// <summary>
/// 20种奖品的Transform，（最多20个不用的奖励）
/// </summary>
private List<Transform> mTransLs = new List<Transform>();
private List<Color> mColors = new List<Color>();
private Transform cloneParent;
private GameObject clonePrefab;
/// <summary>
/// 抽奖停止时父物体转动的角度
/// </summary>
public float tarAngle;
/// <summary>
/// 该奖品对应UI面板上的名称
/// </summary>
public string tarName;
public int giftID;
/// <summary>
/// 用于检验概率有没有为100%
/// </summary>
private List<float> checkProbability = new List<float>();
private void Start()
{
cloneParent = transform.Find("cloneParent");
clonePrefab = Resources.Load<GameObject>("Clone");
dialRotate = GetComponent<DialRotate>();
Init();
}
void Update()
{
#region 测试修改奖品，概率
if (Input.GetKeyDown(KeyCode.K))
{
ClearData();
if (checkProbability.Count > 0)
{
checkProbability.Clear();
}
if (mPoints.Count > 0)
{
mPoints.Clear();
}
AddData("111", 0.3f,1);
AddData("222", 0.1f,2);
AddData("333", 0.2f,4);
AddData("444", 0.05f,5);
AddData("555", 0.15f,6);
AddData("666", 0.2f,7);
SetPriceRange();
}
if (Input.GetKeyDown(KeyCode.J))
{
ClearData();
if (checkProbability.Count > 0)
{
checkProbability.Clear();
}
if (mPoints.Count > 0)
{
mPoints.Clear();
}
AddData("薯条", 0.3f, 1);
AddData("汉堡", 0.1f, 2);
AddData("炸鸡", 0.2f, 4);
AddData("啤酒", 0.05f, 5);
AddData("可乐", 0.15f, 6);
AddData("烤肉", 0.2f, 7);
SetPriceRange();
}
#endregion
if (Input.GetKeyDown(KeyCode.Space))
{
StartRotate();
}
}
private void Init()
{
for (int i = 0; i < 20; i++)
{
GameObject go = Instantiate(clonePrefab) as GameObject;
go.transform.SetParent(cloneParent);
go.transform.localScale = Vector3.one;
go.transform.localPosition = Vector3.zero;
go.name = "" + i;
mTransLs.Add(go.transform);
}
foreach (Transform tr in mTransLs)
{
tr.GetComponent<Image>().color = GetColors();
tr.gameObject.SetActive(false);
}
AddData("薯条", 0.3f, 1);
AddData("汉堡", 0.1f, 2);
AddData("炸鸡", 0.2f, 4);
AddData("啤酒", 0.05f, 5);
AddData("可乐", 0.15f, 6);
AddData("烤肉", 0.2f, 7);
SetPriceRange();
}
/// <summary>
/// 获得随机颜色
/// </summary>
/// <returns></returns>
private Color GetColors()
{
return new Color(Random.Range(0, 1.0f), Random.Range(0, 1.0f), Random.Range(0, 1.0f));
}
/// <summary>
/// 清除奖品的相关数据和设置新的颜色
/// </summary>
public void ClearData()
{
grigtData.Clear();
foreach (Transform tr in mTransLs)
{
tr.GetComponent<Image>().color = GetColors();
tr.gameObject.SetActive(false);
}
}
/// <summary>
/// 设置奖励信息
/// </summary>
/// <param name="text">名称</param>
/// <param name="point">所占的百分比</param>
/// <param name="gID">该奖品的ID</param>
public void AddData(string text, float point, int gID)
{
if (point < 0.05f)
{
Debug.LogError("奖品的概率不能小于5%");
}
if (point >1.0f)
{
Debug.LogError("奖品的概率不能大于100%");
}
GrifData data = new GrifData();
data.mText = text;
data.point = point;
data.gID = gID;
grigtData.Add(data);
if (mPoints.ContainsKey(gID))
{
// mPoints[gID] = point;
Debug.LogError("物品的ID不能一致，无法添加到字典");
return;
}
mPoints.Add(gID, point);
checkProbability.Add(point);
}
/// <summary>
/// 设置奖品转盘的面积的大小显示
/// </summary>
public void SetPriceRange()
{
float total = 0;
for (int i = 0; i < checkProbability.Count; i++)
{
total += checkProbability[i];
}
if (total.ToString() !="1")
{
Debug.LogError("奖品的概率总和不等于百分百，请从新设定概率");
return;
}
transform.localEulerAngles = Vector3.zero;
// List<SData> temDate = mData.OrderBy(mData => mData.point).ToList(); //升序排序
//乱序排列
randomData.Clear();
int count = grigtData.Count; //所设置的奖品的个数
for (int i = 0; i < count; i++)
{
int ra = Random.Range(0, grigtData.Count);
randomData.Add(grigtData[ra]);
grigtData.RemoveAt(ra);
}
if (mListSD.Count > 0)
{
mListSD.Clear(); //先清空
}
float nowAmount = 0;
Text text;
for (int i = 0; i < count; i++) //把设置了奖品的显示出来
{
Transform tr = mTransLs[i];
tr.gameObject.SetActive(true);
// Debug.Log(ramData[i].mText + "/n");
//因为绘制奖励区域是从转盘的下面6点顺时针方向开始绘制，而指针是在上面9点，转盘是顺时针转动，加多180度，
//ramData[i].point/2 使得转盘停下来时使得奖品刚好处于指针的中间
float target = 180 + (nowAmount + randomData[i].point/2) * 360;
if (target > 360)
target -= 360;
text = tr.Find("Text").GetComponent<Text>();
text.text = randomData[i].mText;
GrifInfo grifInfo = new GrifInfo(); //暂时预留，发奖品不是单倍的时候有用
grifInfo.mText = text; //暂时预留，发奖品不是单倍的时候有用
grifInfo.msg = randomData[i].mText; //暂时预留，发奖品不是单倍的时候有用
mListSD.Add(grifInfo); //暂时预留，发奖品不是单倍的时候有用
tr.GetComponent<Image>().fillAmount = randomData[i].point;
//这个是旋转所设置的奖品的角度
tr.localEulerAngles = new Vector3(0, 0, -nowAmount * 360); //0.1Amount = 36度
nowAmount += randomData[i].point;
// Debug.Log(" i = " + i + "target = " + target);
randomData[i].angle = target;
randomData[i].mtran = tr.name;
// Debug.Log("target = " + target);
}
}
/// <summary>
/// 设置奖品的倍数
/// </summary>
/// <param name="multiple"></param>
public void SetMultiple(int multiple)
{
foreach (GrifInfo ss in mListSD)
{
if (multiple == 1)
{
ss.mText.text = ss.msg;
}
else
{
ss.mText.text = ss.msg + " X" + multiple;
}
}
}
/// <summary>
/// 获得结果（得到概率）
/// </summary>
public void GetResult()
{
float probability = Random.Range(0.0f, 1.0f);
float nowSub = 0;
string testStr = "";
for (int i = 0; i < randomData.Count; i++)
{
nowSub += mPoints[randomData[i].gID]; //该奖品对应的概率(Amount值)
if (probability < nowSub)
{
tarAngle = randomData[i].angle; //该奖品停止转动时需要转动的角度
tarName = randomData[i].mtran; //该奖品的名称
giftID = randomData[i].gID; //ID
testStr ="奖品名称 = " + randomData[i].mText + " 奖品概率 = " + (mPoints[randomData[i].gID] * 100 + " UI上的名称 = " + tarName + " 奖品的ID = " + giftID);
Debug.Log(testStr);
break;
}
}
}
private void StartRotate()
{
GetResult();
dialRotate.StartQuan(tarAngle, tarName);
Debug.Log("StartRotate() : tarAngle = " + tarAngle);
}
}
----------------------分割线----------------------
DialRotate.cs
using UnityEngine;
public enum RollType
{
None,
Start, //开始转动
ConstantSpeed, //匀速运动
Stop, //停止运动
}
public class DialRotate : MonoBehaviour {
private RollType nowType = RollType.None;
private float tarAngle; //该奖品停下来时父物体Z轴需要转动的角度
/// <summary>
/// 当前Z轴的值
/// </summary>
private float nowAngle = 0;
private string grifName;
private float time;//计时器
private float speed = 0;
public float angleSpeed = 2;
void Update () {
if (Input.GetMouseButtonDown(1))
{
if (nowType == RollType.ConstantSpeed)
{
nowType = RollType.Stop;
// Debug.Log("tarAngle = " + tarAngle + " nowAngle = " + nowAngle);
tarAngle += nowAngle + 360;
time = 0;
}
}
if (nowType == RollType.Start)
{
time += Time.deltaTime;
float x = angleSpeed * time * time; //这些数值影响转盘的转动速度，自己看着喜欢调节即可
nowAngle -= x;
speed += 4 * time;
transform.localEulerAngles = new Vector3(0, 0, nowAngle);
if (speed > 400)
{
nowType = RollType.ConstantSpeed;
}
}
else if (nowType == RollType.ConstantSpeed)
{
nowAngle -= speed * Time.deltaTime; //匀速旋转
transform.localEulerAngles = new Vector3(0, 0, nowAngle);
}
else if (nowType == RollType.Stop)
{
//速度慢慢变小,转盘慢慢的慢下来
speed = Mathf.Lerp(speed, Mathf.Min(speed, tarAngle * 0.25f), Time.deltaTime);
// Debug.Log("speed = " + speed);
if (speed < 5)
{
speed = 5;
}
float angle = speed * Time.deltaTime;
tarAngle -= angle;
nowAngle -= angle;
if (tarAngle < 0)
{
Debug.Log("转盘停止转动");
nowType = RollType.None;
}
else
{
transform.localEulerAngles = new Vector3(0, 0, nowAngle);
}
}
if (nowAngle < -360)
{
nowAngle += 360;
}
}
public void StartQuan(float tarAngle, string giftName)
{
if (nowType != RollType.None)
{
return;
}
grifName = giftName;
this.tarAngle = 360 * 2 - tarAngle;
nowType = RollType.Start;
time = 0;
nowAngle = transform.localEulerAngles.z;
speed = 0;
}
}
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